Duplex valve



J. L. GISH.

DUPLEX VALVE.

APPLICATION FILED MAR. 1. 1919.

1,405,57 Patented Feb. 7, 1922'.

7,: j; R 2 //B S my 11-1; 0' B PATENT oFF cE.

JOHN LINCOLN GISH, OF SOUTH BEND, INDIANA.

DUPLEX VALVE.

Specification of Letters Patent.

Patented Feb. 7, 1922.

Application filed March 1, 1919. Serial No. 280,180.

To all whom it may concern.

Be it known that I, J onN LINCOLN Chen, a citizen of the United States, residing at South Bend, in the county of Saint Joseph and State of Indiana, have invented a new and useful Duplex Valve, of which the following is a specification.

The object of my present invention is to construct a duplex valve comprising an apertured.valve-casing enclosing a ball-like main valve and a ball-like relief valve, said relief valve having a stem extending through said main valve and provided with a stop to engage said main valve, in such a manner, that said valve is opened or closed, during one turn, or less, of the operating wheel or handle, and that said duplex valve, is provided with means, thereby, limiting the rolling or toppling-over tendency of said main valve, during the opening or closing of said duplex valve, whereby, the said main valve is kept in its working vertical alinement with its "alve-seat.

Fig. 1., is a vertical section of my improved apparatus, showing the duplex valve and the quick operating device in the closed, position.

Fig. 2., is a vertical section of my improved apparatus, showing the duplex valve, and the quick operating device, in 'the open, position.

Fig. 3., shows the head and swing of the operating cam C., and the movement of the cam-plates, 1., and 2., to the position indicated by, 1., and 2., during a one half turn of the operating handle H.

Fig. 4., shows the head and swing of the operating cam C., and the movement of the cam-plates, 1., and 2., to the position indicated by, 1., and 2., during one-quarter (3;) turn of the operating handle H.

Like letters and figures of reference, refer to like parts, in the several figures.

In Fig. 1.,-1., is the inlet and is the outlet to the duplex valve, VC., is the apertured valve casing, cylindrical in form and having its lower section of such a diameter and height, as to receive and engage in a loose running-fit manner the main valve M.,surmounting the top of the casing VC., as an integral part, is the upper section, of the casing VC., like-wise cylindrical in form but much smaller in diameter, than the lower said section, so as to receive and engage in a loose running-fit manner, the relief valve R. The said main-valve M., and the said relief-valve R, are ball-like in form.

The valve-casing V., C., guides'and directs the ball-like-main-valve M., in its lateral alinement, with its seat, while the reliefvalve-stem A., extending through and engaging the ball-like-main-valve M., hides and directs the ball-like-main-valve 1 in its vertical alinement, with its seat, during the reciprocating movements of the valve M., within the valve-casing V., C.

The valve-casingV., C., guides and directs the ball-like-relief-valve R, in its lateral and perpendicular working position, while the relief-valve-stm A., of said valve 11., extending through and engaging the balllike-main-valve guides and directs the ball-like-relief-valve R., in its vertical alinement, with its seat, during the reciprocating movements, of the valve R., within the valve-casingV, C

By such an arrangement and relation of parts the ball-like duplex valve is held in lateral and vertical working alinement with its seat, and in an operating position with its quick operating device.

Should the valve-casing V., C., not serve, as a loose lateral guide, to the ball-likerelief-valve R, 111 1ts reciprocating movements, within the 'valve-casin V., (3., as soon as the ball-like-main-valve %\I., was lifted from its seat, the ball-like-main-valve M., would roll or topple over, to some other inclination, other-wise than a vertical working position, which would place the disc of the ball-like-main-valve M., out of vertical alinement, With its seat, and at the same time carry with it, the relief-valve R., from its vertical working position, thereb causing the cooperating part of the relie -valvestem A., with the operating shaft 5., to become disengaged, and render the valve useless and inoperative. I

But it is to be noted, that the valve-casing V., C., does form a lateral and perpendicular working guide, for the ball-like-relief-valve R., therein,.and while the ball-likerelief-valve R, has a loose running fit, within the valve-casing V., C., the lateral lay, between the valve R., and the inside 0 casing V., C., is not of such a degree, as would allow the ball-like-main-valve M., to roll or turn, from its vertical Working alinement, with its seat. Or, to set forth the special feature in other words,the duplex valve herein described is rovided withan a ertured valve-casing V enclosing a ball-.

1' e main valve M., and a ball-like relief valve R., said relief valve R., is provided with an apertured stem A., extending through the] ball-like main valve M., and having a stop for engaging said main valve M. v 7 'Since the main valve M., is spherical in form, and not having an fixed or ri id connection, either above or elow its va ve-seat,

to hold said main valve M.,-in its upright working position, it is necessary, to prov1de means, whereby, the ball-like main valve M., may be kept in its upright working position, and not allowed, to roll from or tople over, from its vertical alinement with its seat, during. the opening or closure of said duplex valve.

.The *special feature is provided for, by enclosing the said ball-like relief valve R.,

rovided with its apertured stem A., with{ 1n the valve-casin V0. in a loose running fit manner, yet su ciently close to the inner wall of valve-casin VG., so that, if the balllike main valve starts to roll from or topple over, from its vertical alinement with its seat, the said ball-like relief valve R.,

contacts the inner wall of easing VC., and limits the roll or toppling over tendency of said'ball-like main valve M., during the opening or closure of said duplex valve,

I thereby, keeping the ball-like main valve M.,'in'vertical alinement with its seat, and at the same time-holding the cooperating thereb allowing the duplex valve to be opene j R., is the relief valve; M., is the main means, at the outer end of stem A., in working alinement with its operating means,

or closed.

valve; A. is an apertured relief valve stem; 13., B',, 1%

- cam-plates, 1., and 2., joined together by the standard 3., and coupled to the aper-' tured relief valve stem A.; C., is the o erating cam; S., is the o crating cam sha t; S., .B., is the cam shaft caring; G., is a groove on cam shaft forlubricants; D., is a land valve disc, on cam shaft, to prevent lea age,

between cam shaft SJ, and cam shaft bearing S., B. 8., is a stop on camshaft bearing 8.,

B.; e'., is a sto on operating handle 11.; H., is the operating handle; O.,-O-'., O"., is

' the inlet, passage-way, and outlet',' through the stem A.

In operation, the o eratin handle H, actuates the cam shaft whic in turnrevolves the cam C. Y

'In opening the valve, the cam (3., contacts I the cam-plate, 1 v I is the valve body; P-.,'-is the The cam plates1.,and2., ban -damage the aperturedjrelief valve stem A., the said stem is corres ondingly actuated asthe' cam opened. (Seemy. prior patent No. 10425 4 7,f0r duplex valve).

. In closing the valve, the cam C.,contacts the cam-plate 2., and as the. cam C.,-is returned to its starting dposition, a corresponding action is imparte to the aperture relief va valve, to its'valve seats, whenever, so desired.

, What I do claim as my invention, and desire to secure, by Letters Patent is,-j-

1. In'a duplex valve comprising an aper tured valve-casing enclosing'a ball-like main valve and a ball-l1ke relief valve, said relief- .valve having a stem extending through said the rolling or toppling-over tendency of said main-valve, during the opening or closing of saidduplex valve, whereby, the said mainvalve is kept in its working vertical alinement, with its valve-seat. a v

2. In a duplex valve comprising an apertured valve-casing enclosing a ball-like mainvalve and a ball-like relief-valve said'reliefvalve having a, stem extending through said main-valve and provided with a stopto engage said main-valve, a circumferential 'uide, for said relif-valve, forming av part 0' said casing said relief-valve contactng in a loose runnlng fit, with the inner wall of said guide, during the reciprocating movement of said relief-valve, thereby limiting the rolling or toppling-over tendency, of said main-valve, during the openin or closing of said duplex valve, whereby,'.t e said main-- valve is kept in its working vertical aline- 'ment, with its valve-seat, and whereby, the

, (3., is revolve ,whereby, the duplex valve ve stem A., thereby returning the-duplex cooperating parts, at the outer end of said relief-valve-stem, are maintained in working alinement, with its operating means, allowing the duplex valve to be 0 ened or closed.

In testimony whereof, have signed my name, to this specification, in the presence of two subscribing witnesses.

JOH N LINCOLN GISH.

Witnesses: v

' ANNA J. Grsn F. F'LoRENca film 

